package com.itheima.reggie.config;

import com.itheima.reggie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

//记录日志
@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
    /*
    * @param registry 设置静态资源映射
    * */

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry){
        log.info("开始进行静态资源映射。。。");
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }
    /*
    * 扩展mvc的消息转换器
    * */

    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器。。。");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter MessageConverter=new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用jackson将java对象转为json
        MessageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mmvc框架的转换器集合中
        converters.add(0,MessageConverter);


    }
}
